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广州新白云机场土洞、溶洞的稳定性判别及其加固处理
引用本文:张合青,杨国荣,魏弋锋.广州新白云机场土洞、溶洞的稳定性判别及其加固处理[J].地球与环境,2005,33(3):36-40.
作者姓名:张合青  杨国荣  魏弋锋
作者单位:中国民航机场建设总公司,北京,100101
摘    要:土洞、溶洞问题是广州新白云国际机场的主要工程地质问题之一。土洞、溶洞数量多达一百多个,洞体直径3-104 m,洞高0.4-23.5 m,顶板埋深3.2-35.4 m,在土方施工时即出现崩塌现象。文章在对土洞、溶洞的特征进行详细分析的基础上,结合本机场工程的特点,提出了一套稳定性判别的方法,进而对土洞、溶洞处理方法进行了探讨,并通过现场试验研究,在取得试验测试结果的基础上,将填充贫混凝土与袖阀管注浆相结合的加固方法,应用于实际工程中,取得了良好的处理效果,并积累了机场工程土洞、溶洞处理的成功经验。

关 键 词:土洞  溶洞  稳定性评价  加固处理  机场工程
文章编号:1672-9250(2005)03-0036-05
收稿时间:2005-03-31
修稿时间:2005-06-15

DISCRIMINATION OF STABILITY OF SOIL CAVES AND SOLUTION CAVES IN THE PROCESS OF CONSTRUCTION OF NEW BAIYUN INTERNATIONAL AIRPORT IN GUANGZHOU AND THEIR REINFORCEMENT
ZHANG He-qing,YANG Guo-rong,WEI Yi-feng.DISCRIMINATION OF STABILITY OF SOIL CAVES AND SOLUTION CAVES IN THE PROCESS OF CONSTRUCTION OF NEW BAIYUN INTERNATIONAL AIRPORT IN GUANGZHOU AND THEIR REINFORCEMENT[J].Earth and Environment,2005,33(3):36-40.
Authors:ZHANG He-qing  YANG Guo-rong  WEI Yi-feng
Institution:China Airport Construction Corporation of CAAC, Beijing 100101, China
Abstract:Soil caves and solution caves are one of the main engineering geological problems involved in the construction of New Baiyun International Airport in Guangzhou. There are more than 100 caves, 3-104 m in diameter, 0. 4-23. 5 m in height, and 3. 2-35. 4 m in roof depth. Collapse happened in the course of construction. In this paper, methods of stability evaluation are put forward based on detailed analysis of caves' characteristics, in combination with the specialties of the airport project. And the method of treating the caves is further discussed. The improvement method by filling with concrete as well as grouting with mini-valve tubes is applied to practical project on the basis of test data acquired from in-situ tests. The method gains perfect treatment effect, and successful experience is accumulated in dealing with the caves of aerodrome project.
Keywords:soil cave  solution cave  stability evaluation  improvement  airport project
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